The invention relates to a device (10) for treating a liquid with a plasma, the device (10) having a high-voltage electrode (20) and a liquid-permeable ground electrode device (30). The ground electrode device (30) has a flat, conductive area (32) and a porous area (34) arranged on the flat, conductive area (32), the conductive area (32) being liquid-permeable along its area. A discharge space (40) is formed between the ground electrode device (30) and the high-voltage electrode (20). A first dielectric (50) is arranged on the high-voltage electrode (20), so that a plasma can be generated in the discharge space (40) by means of dielectrically impeded discharge. The device (10) also has a flow volume (60) into which the liquid (12) can be introduced and which is surrounded by a wall (62). The wall (62) of the flow volume (60) has the ground electrode device (30) at least in a first area, so that the flow volume (60) is connected to the discharge space (40) via the ground electrode device (30) in a liquid-permeable manner.
Figure 1 of the Patent Specification
EP3562276 B1
1. Device (10) for treatment of a liquid (12) with a nonthermal atmospheric pressure plasma, wherein the device (10) comprises the following components:
- a high-voltage electrode (20);
- a liquid-permeable ground electrode device (30) comprising an areal, conductive region (32) and a porous region (34) arranged at the areal, conductive region (32);
- a discharge space (40) formed between the ground electrode device (30) and the high-voltage electrode (20);
- a first dielectric (50) which is arranged at the high-voltage electrode (20) such that a plasma can be generated in the discharge space (40) by means of a dielectric-barrier discharge;
- a flow volume (60) comprised by a wall (62) into which the liquid (12) can be fed;
wherein the wall (62) of the flow volume (60) comprises at least in a first region the ground electrode device (30), such that the flow volume (60) is connected liquid-permeably to the discharge space (40) via the ground electrode device (30);
wherein the device (10) is formed such that, in use, the liquid fed into the flow volume (60) passes through the ground electrode device and pours onto a surface of the ground electrode device (30) that faces the discharge space (40), so that a liquid film is formed on said surface;
characterized in that
the conductive region (32) of the ground electrode device is liquid-permeable along its areal expansion.
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